Rain Bird X43283 800 Series 3/4" Twist Lock to 3/4" MPT Thread Adaptor simplify the installation of all industry standard dripline and distribution tubing. They provide an even tighter seal on tubing by using high quality barbs and twist-locking nuts. Their unique barb design reduces insertion force while maintaining a secure fit. Ideal for use with Rain Bird 3/4" XBS and QF Header distribution tubing.